We found in our company that in some machines works better with generic toners , example of this is the b&W analog ft 3013, ft 3213, ft 3713,ft 4018.....the wide format analog series also.................they work better with katun toner.....in digital series b&w ,aficio 350/450 , 1035/45 , mp 3500/4500.........also works more cleaner.
Minolta B&W , works great with katun , also Canon B&W.......In color some Ricoh like ap 3800 , 3850, all the cl series....works better with katun..... in Minolta color....bizhub c200/203,....c 250 ....c253...etc....works well, no better than originals.....but with no difference.......and certainly more cheaper.
Canon color boxes donīt like generic toners , (or we couldnīt find one generic that works well)....All of HP....works great (B&W and color),Brother the same,Samsung also,...
We tried other generic brands, but sometimes they worked , and other times in the same machine using that ....itīs a nightmare.....we found that they are not making the same quality toner all the time...